There is a very common "accessibility" setting in many Quest 2/Quest 3 games that you can manipulate to double or triple your in game height!
Check out the in game footage of SwordsmanVR as I go from 6'4" to over 12'!
Not ever game has this specific setting, but many do, and it works in every single one!
Cheers, let me know which game you found with the setting in the comments!